Issue with webworkify and Webpack 5

Hello!

I'm running into some issues with using webworkify with a project I'm upgrading to Webpack 5.

I've created a minimum reproducible project here:
https://github.com/amosbyon1224/webworkify-webpack5

I'm getting an error that `arguments` is undefined from here:
https://github.com/browserify/webworkify/blob/master/index.js#L1

This was working fine as of webpack 4.27.1 but does not seem to work as of Webpack 5.6.0

Inizia dalla riga collegata in index.js e riproduci il problema usando il progetto minimo riproducibile collegato. Confronta il comportamento del progetto con Webpack 4.27.1 e 5.6.0, quindi verifica che la build di Webpack 5 non segnali più `arguments` come non definito.

Scritto dal modello di indicizzazione a partire dal testo della issue.